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- Title
Calcium Channels, OST1 and Stomatal Defence: Current Status and Beyond.
- Authors
Upadhyay, Santosh Kumar
- Abstract
Stomatal immunity is regulated by pathogen-associated molecular patterns (PAMPs)- and abscisic acid (ABA)-triggered signalling in different ways. Cytoplasmic Ca2+ signature in the guard cells plays a vital function in stomatal immunity, but the mechanism of Ca2+ import is unknown. It has been very recently established that the hyperosmolality-gated calcium-permeable channels (OSCAs) and cyclic nucleotide-gated channels (CNGCs) are responsible for the influx of Ca2+ in the cytoplasm, which are activated after BIK1-mediated phosphorylation and ABA interaction during PAMPs- and ABA-triggered stomatal immunity in plants, respectively. Further, ABA-triggered OPEN STOMATA1 (OST1) causes the disassembly of microtubules in the guard cells besides activation of S-type anion channels (SLAC1) for the efflux of cytoplasmic anions that leads to stomata closure.
- Subjects
HUESCA (Spain); CALCIUM channels; STOMATA; DISEASE resistance of plants; ABSCISIC acid; MICROTUBULES; CALCIUM ions
- Publication
Cells (2073-4409), 2023, Vol 12, Issue 1, p127
- ISSN
2073-4409
- Publication type
Article
- DOI
10.3390/cells12010127